10. Which of these groups represents organisms that are heterotrophs?
A. all organisms that developed after photosynthesis
B. All of the organisms in domain Eukarya.
C. microorganisms that use organic carbon for energy, fungi, and earthworms
D. photosynthesizing bacteria, algae, ferns, and pine trees
E. microorganisms that harness solar energy, converting it to chemical energy
C. microorganisms that use organic carbon for energy, fungi, and earthworms
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How were experiments done by Griffith similar to those done by Avery, MacLeod, and McCarty?
A. Both used a mouse host. B. Both used pneumococcal bacteria. C. Both used purified DNA. D. Both were done in the 1940s. E. Both used enzymes that destroyed DNA.
Soil particles are classified based on their size
Indicate whether the statement is true or false.
How did Bateson and Punnett's work with comb morphology in chickens differ from the dihybrid work of Mendel?
A. They were working with sex-limited traits. B. Their F2 offspring displayed 4 unique phenotypes, not the four combinations of two phenotypes expected in a Mendelian cross. C. ½ of their combinations were lethal. D. The expression of their trait varied by the environment in which the chickens were raised.
How can PCR be used to induce site-specific mutations in DNA?
What will be an ideal response?